Galvanic Isolation Module for Safe Device Interconnection
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Solution Overview
Problem
The interconnection of electronic devices with different earth grounding configurations can lead to induced current loops, causing damage or safety risks due to voltage disparities, particularly when Class 1 and Class 2 devices are connected, as existing solutions like galvanic isolators pose safety concerns or restrict DC power supply.
Innovation Solution
An electronic device with integrated galvanic isolation modules separates signal and grounding paths, allowing for safe RF and DC signal transmission while preventing current loops, using transformers, capacitors, or opto-couplers for isolation, and enabling operation in different modes depending on the connected cable type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If galvanic isolators are used to prevent current loops, then safety is improved, but DC power supply capability is restricted
Solution Approach 1:
The patent introduces a galvanic isolation module as an intermediary component between the signal path and power supply path. This module includes transformers for signal isolation and dedicated power supply circuits for DC power transmission, allowing the system to maintain galvanic isolation for safety while enabling DC power supply through separate isolated pathways.
Solution Approach 2:
The patent segments the electrical connection into separate isolated pathways: one for RF signals through transformers and another for DC power through isolated power supply circuits. This segmentation allows independent optimization of each pathway - signal isolation for safety and power transmission for functionality - without mutual interference.
2Adaptability or versatility
If Class 1 and Class 2 devices are interconnected, then adaptability is improved, but induced current loops cause equipment damage
Solution Approach 1:
The galvanic isolation module acts as a mediator between Class 1 and Class 2 devices, providing galvanic isolation that blocks induced current loops while allowing signal and power transmission. The transformers and isolated power supply circuits enable safe interconnection of devices with different grounding configurations.
Solution Approach 2:
The patent creates isolated reference potential levels on each side of the galvanic isolation module, allowing devices with different earth grounding configurations (Class 1 and Class 2) to operate at their respective potential levels without creating harmful current loops, while still enabling functional interconnection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces the risk of equipment damage and safety hazards while allowing DC power supply to devices like satellite antennas, enhancing the safety and adaptability of home electrical systems.
Implementation Method 1
The isolation module comprises a transformer with a primary winding and a secondary winding
Implementation Method 2
The isolation module comprises an opto-coupler
Implementation Method 3
The isolation module comprises a capacitor
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
The present disclosure relates to an electronic device suitable to be interconnected with another electronic device. According to at least one embodiment, the device comprises: a front-end module comprising: at least one front-end connector, adapted to be connected to a cable adapted for receiving electrical signal, a reception module adapted to receive an electrical signal from the front-end connector; a back-end module configured to process an electrical signal; an interfacing module comprising at least an isolation module adapted to transmit, to the back-end module, an electrical signal received from the front-end module.